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Galena (spinel twin) with Sphalerite

#AH52913

Galena (spinel twin) with Sphalerite

#AH52913
Availability
Sold
Size
8 x 5 x 3 cm - Sm Cabinet 
Formula
PbS (RRUFF)
Locality
Sovietskiy mine, Dal'negorsk, Primorskiy Kray, Russia
Tagged
sulfide

Superb spinel law twinned Galena flattened crystals - the twinning occurs on the octahedral face in which it is parallel to....why the crystals are flat, I do not know. Spinel, the mineral in which the twinning is common, does not flatten like this. Anyhow there are at least five good sized crystals to 2cm across. At the bass of the specimen are fantastic and lustrous black Sphalerite crystals. Very nice specimen.

Galena

Formula
PbS 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Massive - Granular, Massive 
Cleavage
Perfect, Perfect, Perfect 
Luster
Metallic 
Color
light lead gray, dark lead gray 
Streak
grayish black 
Class
Isometric - Hexoctahedral 
Fracture
Brittle 
Hardness
2.5 

Data courtesy of Webmineral.

Collection
Arnold G Hampson Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Galena
On Dakota Matrix
Other Available Galena
WebMineral
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Mindat
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